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Method for remediation of heavy metal contaminated soil by using macleaya cordata, and application of macleaya cordata

A technology for contaminated soil and cadmium-contaminated soil, which is applied in the field of remediating heavy metal-contaminated soil by using Boluohui, to achieve the effect of solving the problem of remediation and governance, and achieving huge economic and social benefits

Inactive Publication Date: 2019-12-20
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No new molybdenum-enriching plants have been reported in other regions except the above-mentioned regions of the United States and Iran

Method used

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  • Method for remediation of heavy metal contaminated soil by using macleaya cordata, and application of macleaya cordata
  • Method for remediation of heavy metal contaminated soil by using macleaya cordata, and application of macleaya cordata
  • Method for remediation of heavy metal contaminated soil by using macleaya cordata, and application of macleaya cordata

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1 Pollution investigation of Henan Luanchuan mining area and screening of hyperaccumulator (enrichment) plants

[0040] Field sampling was carried out on a molybdenum mine in Luanchuan, Henan Province. A total of 14 soil samples and 26 plant samples were collected at the corresponding sampling points. The soil pollution in the mining area was preliminarily analyzed based on the heavy metal content in the later soil samples and plant samples (Table 1 ), and (hyper)enriched plants were obtained, and their species were identified according to plant taxonomy (Table 2). The research results show that the soil around the mining area mainly has serious Mo pollution and slight Pb and Cd pollution, and the soil Mo pollution reaches the highest level of 1314.97 mg / kg (Table 1). Among them, Boluohui has strong tolerance to the soil in mining areas, and only it can grow normally in highly polluted areas (such as figure 1 ), the Mo content in its aerial parts reached 704.42...

Embodiment 2

[0046] BCF=aboveground element content / soil element content; AF=element content in target plants / element content in general plants (Yanqun et al., 2005) Example 2: Mo tolerance detection

[0047] Carry out Mo tolerance experiment to the Mo enrichment plant that the preliminary screening of embodiment 1 obtains, be divided into:

[0048] 1. Tolerance to Mo during seed germination;

[0049] 2. The tolerance to Mo during the plant growth period.

[0050] experiment method:

[0051] 1. During the seed germination period, the tolerance to Mo was measured by the petri dish filter paper method: the same family plant Poppy poppy and rapeseed with strong seed germination tolerance were selected as reference plants, and the plump seeds of these three plants were selected for 50 Disinfect in 3% sodium hypochlorite solution for 5 minutes, and then rinse with distilled water. Uniform seeds were respectively placed on a petri dish covered with double-layer filter paper to germinate, and ...

Embodiment 3

[0058] Example 3: Research on Mo enrichment ability of bo falling back

[0059] Soil culture experiment: compound Mo-contaminated soil, Mo treatment concentration: 0, 50, 200, 500, 1000 mg / kg, 1 kg of soil per pot, three Boluo seedlings per pot, three repetitions, planting for 3 months, harvesting Seedlings, the Mo content in Boluohui was measured ( Figure 4 ).

[0060] The results show that the Mo content in the above-ground part of Boluohui exceeds 1500mg / kg in 500mg / kg Mo-contaminated soil, and at this time:

[0061] Transfer coefficient (IF): the content of a heavy metal element in the aboveground part of the plant / the content of the element in the underground part of the plant

[0062] =1578 / 514=3.07

[0063] Enrichment coefficient (BFC): the content of a certain heavy metal element in the aboveground part of the plant / the content of this element in the soil

[0064] = 1578 / 500 = 3.156

[0065] According to the literature (Boojar et al., 2011), Boojar can be defined...

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Abstract

The invention provides a method for remediation of heavy metal contaminated soil by using macleaya cordata, and application of the macleaya cordata. The molybdenum super-enriched plant macleaya cordata is planted in soil contaminated by heavy metal molybdenum, the molybdenum super-enriched plant macleaya cordata with large biomass is adopted for plant remediation of the heavy metal contaminated soil, and effective, quick and safe remediation of the heavy metal contaminated soil is achieved. Due to the fact the macleaya cordata has medicinal value at the same time, remediation while earning canbe achieved through the method, and large using value and research value are achieved.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and in particular relates to a method for repairing heavy metal-contaminated soil by using Boluohui and its application. Background technique [0002] Molybdenum is an essential trace element in plants and plays a very important role in nitrate assimilation, sulfite detoxification, purine metabolism and synthesis of abscisic acid, auxin and glucose isothiocyanate (Ide et al. ,2010). However, excessive molybdenum can also cause serious poisoning to animals and plants, especially mammals. Since Ferguson et al. (1943) first reported that animals were poisoned by molybdenum due to eating high-molybdenum grass, the problem of molybdenum pollution has increasingly attracted the attention of scholars at home and abroad. Attention (McGrathe et al., 2010; Lewis and Meeker, 2015). [0003] The large-scale mining of molybdenum ore is the main source of molybdenum pollution in water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
CPCB09C1/105B09C2101/00
Inventor 陈亚华王杰王潇李继科张红晓史良沈振国
Owner NANJING AGRICULTURAL UNIVERSITY
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